OpenPhone
Open-source Android OS for system-level AI agents
OpenPhone is a bold, open-source experiment that reimagines Android as an agentic OS. Currently only for builders and tinkerers. The system-level approach is genuinely novel and worth watching, but don't expect a polished consumer product — expect to compile an image and flash a device.
- Developers building phone-based AI agents
- Hobbyists experimenting with Android modding and custom ROMs
- Researchers in human-AI interaction and agent systems
- Anyone wanting OS-level AI co-pilot with full device access
- Non-technical users seeking a polished commercial product
- Users needing iOS support
- Those who want a traditional assistant app without OS customization
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In short
OpenPhone — Open-source Android OS for system-level AI agents. Best for Developers building phone-based AI agents, Hobbyists experimenting with Android modding and custom ROMs, Researchers in human-AI interaction and agent systems. Free to use.
Viability Score
How likely is OpenPhone to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- System-level AI assistant embedded in Android OS
- Screen reading and UI context awareness
- App operation without manual taps (agent-controlled)
- Real-time voice and chat interaction
- Watchers for background tasks triggered by phone events
- Policy, approvals, and audit trails for agent actions
- Task continuation across multiple turns
- Event-triggered agents (messages, notifications, calls, time, location)
- Scheduled internet-aware updates with phone state
- Open source on GitHub
- Customized Android system image
- Privileged assistant surface
- Whole-phone chat interface
- Background runs visible and reviewable
- Same-screen companionship (agent co-exists with user)
About OpenPhone
OpenPhone is a customized Android operating system that embeds AI agents directly into the OS, enabling them to see the screen, operate apps, monitor phone events, and run background tasks. Built by Secondly, an AI lab focused on presence, it targets hobbyists, developers, and researchers who want to experiment with phone-based agents beyond chat UIs. Unlike typical assistant apps, OpenPhone provides a privileged assistant surface, real-time voice and chat, watchers for event-triggered background runs, and policy controls with audit trails. The OS is open source and available on GitHub, emphasizing transparency and community-driven development. Capabilities include app operation without manual taps, same-screen companionship, event-triggered agents, scheduled internet-aware updates, and task continuation across multiple turns. OpenPhone stands apart from commercial AI assistants by offering OS-level integration, making the phone a shared surface for live work and automation.
Behind the Verdict
If you're a developer or researcher itching to give an AI agent full system access on a phone, OpenPhone is the most serious attempt we've seen. It's not just another assistant wrapper — it modifies the Android image itself, giving the agent screen context, input control, and background watchers. This is genuinely different from the usual chatbot or automation app. The launch materials show concrete demos: agents filling forms, reacting to notifications, and running scheduled briefs. The open-source GitHub repo means you can inspect, modify, and contribute. Where it bites: this is early-stage, DIY, and requires technical know-how — flashing a device, possibly dealing with bugs, and no iOS support. Compared to commercial tools like ChatGPT's phone integration or Apple Intelligence, OpenPhone trades polish for depth. Use it to prototype agentic workflows, not to replace your daily driver. For non-technical users or those wanting a turnkey assistant, skip this. For anyone serious about building phone-based agents, it's the most promising foundation yet.
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Use Cases
- Automate repetitive multi-step phone tasks like form filling and verification across apps
- Run a companion agent that watches your screen and chats while you browse or shop
- Create event-triggered agents that react to incoming messages, notifications, or calls
- Set up scheduled agents that produce daily briefs combining phone state with web info
- Build and test agentic workflows on real Android hardware with OS-level access
Limitations
- OpenPhone is currently rolling out for developers and builders; documentation is still in progress.
- As an open-source Android fork, it may lack stability and broad device support.
- General users may find the setup and complexity challenging.
Resources & Guides
Official links
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